Class: Color::Scheme

Inherits:
Object
  • Object
show all
Includes:
Loggable
Defined in:
lib/color/scheme.rb

Overview

classes or methods, or factory?

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Scheme

Returns a new instance of Scheme.



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# File 'lib/color/scheme.rb', line 38

def initialize
  @hues = Array.new
end

Instance Attribute Details

#hues ⇒ Object (readonly)

Returns the value of attribute hues.



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# File 'lib/color/scheme.rb', line 36

def hues
  @hues
end

Class Method Details

.create_hue(value) ⇒ Object

creates a hue from the value, processing it as a hue (0-360) or as RRGGBB, or generating a random one, if nil or an empty string.



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# File 'lib/color/scheme.rb', line 18

def self.create_hue(value)
  if value.nil?
    (rand * 360).round
  elsif value.kind_of? Numeric
    value.round % 360
  elsif value.kind_of? String
    if %r{^\d{3}$}.match(value)
      value.to_i.round % 360
    elsif md = Color::RGB::RRGGBB_REGEXP.match(value)
      Color::RGB.new(value).to_hsb.hue
    else
      raise RuntimeError.new("invalid hue value '#{value}")
    end
  else
    raise RuntimeError.new("invalid hue value '#{value}")
  end
end

Instance Method Details

#add_hue(val) ⇒ Object 



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# File 'lib/color/scheme.rb', line 42

def add_hue(val)
  hue = self.class.create_hue(val)
  @hues << hue
  hue
end